Bowen's Automobile & Sportsmen's Guide for Indiana, 1917
The original maps were in black, yellow, red, and white. These
scans are from xeroxes so are harder to read than the originals.
These files are JPEGs from 35k to 53k.
Once you have linked to these images, you can also view larger JPEGs,
191k to 334k, of the same maps. You can actually read the words and
figure out where the roads are on the larger maps. The same cannot
be said about these smaller versions.